Ribbon cartridge for printer



FIG. 1 is an enlarged front right side perspective view of a ribbon cartridge for a printer showing my new design;

FIG. 2 is an enlarged rear left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a right side elevational view thereof;

FIG. 9 is an enlarged front right side perspective view of a second embodiment of FIG. 1; and,

FIG. 10 is an enlarged rear left side perspective view of FIG. 9. 

The ornamental design for a ribbon cartridge for a printer, as shown and described. 